<template>
  <div class="demo-image__placeholder">
  <div class="block">
    <el-image :src="src">
      <div slot="placeholder" class="image-slot">
        加载中<span class="dot">...</span>
      </div>
    </el-image>
  </div>
</div>
</template>

<script>
  export default {
    data() {
      return {
        src: 'https://cube.elemecdn.com/6/94/4d3ea53c084bad6931a56d5158a48jpeg.jpeg'
      }
    }
  }
</script>